<!--  -->
<template>
  <div>
    <!-- 面包屑导航区 -->
    <el-breadcrumb separator-class="el-icon-arrow-right">
        <el-breadcrumb-item :to="{ path: '/home' }">首页</el-breadcrumb-item>
        <el-breadcrumb-item>用户管理</el-breadcrumb-item>
        <el-breadcrumb-item>用户列表</el-breadcrumb-item> 
    </el-breadcrumb>

    <!-- 卡片视图区 -->
    <el-card class="box-card">
        <el-row :gutter="20">
            <el-col :span="7">
                <!-- 搜索与添加区 -->
                <el-input placeholder="请输入内容" v-model="queryInfo.query" clearable @clear="getUserList">
                <el-button slot="append" icon="el-icon-search" @click="getUserList"></el-button>
                </el-input>
            </el-col>
            <el-col :span="4">
                <el-button type="primary" @click="addDialogVisible=true">添加用户</el-button>
            </el-col>
        </el-row>
        <!-- 用户列表区 -->
        <el-table :data="userList"  border stripe >
            <el-table-column type="index" label="#"></el-table-column>
            <el-table-column label="姓名" prop="username" align="center"></el-table-column>
            <el-table-column label="邮箱" prop="email" align="center"></el-table-column>
            <el-table-column label="电话" prop="mobile" ></el-table-column>
            <el-table-column label="角色" prop="role_name" align="center"></el-table-column>
            <el-table-column label="状态" align="center">
                <template slot-scope="scope">
                        <el-switch
                            v-model="scope.row.mg_state"
                            @change="userStateChanged(scope.row)"    
                        >
                        </el-switch>                                                                                                                           
                </template>
            </el-table-column>
            <el-table-column label="操作" align="center" width="250px">
                <template slot-scope="scope">
                    <!-- 修改按钮 -->
                    <el-button type="primary" icon="el-icon-edit" size="mini" @click="showEditDialog(scope.row.id)"></el-button>
                    <!-- 删除`按钮 -->
                    <el-button type="danger" icon="el-icon-delete" size="mini" @click="removeUserId(scope.row.id)"></el-button>
                    <!-- 分配角色按钮 -->
                    <el-button type="warning" icon="el-icon-share" size="mini" @click="setRole(scope.row)">分配角色</el-button>
                </template>
            </el-table-column>
        </el-table>

        <!-- 分页区域 -->
        <el-pagination
            @size-change="handleSizeChange"
            @current-change="handleCurrentChange"
            :current-page="queryInfo.pagenum"
            :page-sizes="[1, 2, 5, 10]"
            :page-size="queryInfo.pagesize"
            layout="total, sizes, prev, pager, next, jumper"
            :total="total" >
        </el-pagination>
    </el-card>

    <!-- 添加用户的对话框 -->
    <el-dialog
        title="添加用户"
        :visible.sync="addDialogVisible"
        width="50%"
        @close="addDialogClosed"
    >
        <!-- 内容主题区 -->
        
            <el-form :model="addForm" :rules="addFormRules" ref="addFormRef" label-width="70px" >
            <el-form-item label="用户名" prop="username">
                <el-input v-model="addForm.username"></el-input>
            </el-form-item>
            <el-form-item label="密码" prop="password">
                <el-input v-model="addForm.password"></el-input>
            </el-form-item>
            <el-form-item label="邮箱" prop="email">
                <el-input v-model="addForm.email"></el-input>
            </el-form-item>
            <el-form-item label="手机" prop="mobile">
                <el-input v-model="addForm.mobile"></el-input>
            </el-form-item>
            </el-form>
        <!-- 底部按钮区 -->
        <span slot="footer" class="dialog-footer">
            <el-button @click="addDialogVisible=false">取 消</el-button>
            <el-button type="primary" @click="addUser">确 定</el-button>
        </span>
    </el-dialog>
    
    <!-- 修改用户的对话框 -->
    <el-dialog
        title="修改用户"
        :visible.sync="editDialogVisible"
        width="50%"
        @close="editDialogClosed"
    >       
        <!-- 内容主题区 -->
        
            <el-form :model="editForm" :rules="editFormRules" ref="editFormRef" label-width="70px" >
            <el-form-item label="用户名" >
                <el-input v-model="editForm.username" disabled></el-input>
            </el-form-item>
            <el-form-item label="邮箱" >
                <el-input v-model="editForm.email" prop="email" ></el-input>
            </el-form-item>
            <el-form-item label="用户名" >
                <el-input v-model="editForm.mobile" prop="mobile"></el-input>
            </el-form-item>
            </el-form>
        <!-- 底部按钮区 -->
        <span slot="footer" class="dialog-footer">
            <el-button @click="editDialogVisible=false">取 消</el-button>
            <el-button type="primary" @click="editUserInfo">确 定</el-button>
        </span>
    </el-dialog>

    <el-dialog
        title="分配角色"
        :visible.sync="setRoleDialogVisible"
        width="50%"
    >       
        <!-- 内容主题区 -->
        <div>
            <p>当前的用户：{{userInfo.username}}</p>
            <p>当前的角色：{{userInfo.role_name}}</p>
            <p>分配新角色：
                  <el-select v-model="selectRoleId" placeholder="请选择">
                    <el-option
                    v-for="item in roleList"
                    :key="item.id"
                    :label="item.roleName"
                    :value="item.id">
                    </el-option>
                </el-select>
            </p>
        </div>
        <!-- 底部按钮区 -->
        <span slot="footer" class="dialog-footer">
            <el-button @click="setRoleDialogVisible=false">取 消</el-button>
            <el-button type="primary" @click="updateUserInfo">确 定</el-button>
        </span>
    </el-dialog>
    
  </div>
</template>

<script>
export default {
  data () {
    return {
        //获取用户参数对象
         queryInfo: {
             query: '',
             pagenum: 1,
             pagesize: 5
         },
         userList: [],
         total: 0,
         //控制对话框的显示与隐藏
         addDialogVisible: false,
         //添加用户的表单数据
         addForm: {
             username: '',
             password: '',
             email: '',
             mobile: ''             
         },
         //添加表单的验证规则对象
         addFormRules: {
             username: [
                { required: true, message: '请输入用户名', trigger: 'blur' },
                { min: 3, max: 12, message: '用户名的长度在 3 到 12 个字符', trigger: 'blur' }
             ],
             password: [
                 { required: true, message: '请输入密码', trigger: 'blur' },
                 { min: 6, max: 16, message: '密码的长度在 6 到 16 个字符', trigger: 'blur' }
             ],
             email: [
                { required: true, message: '请输入邮箱', trigger: 'blur' }
             ],
             mobile: [
                { required: true, message: '请输入手机号码', trigger: 'blur' }
             ]
         },
         //验证表单的ref对象
         addFormRef: {},
         //控制修改用户对话框的显示与隐藏
         editDialogVisible: false,
         //查询到的用户信息对象
         editForm: {

         },

         editFormRules: {
             email: [
                { required: true, message: '请输入邮箱', trigger: 'blur' }
             ],
             mobile: [
                { required: true, message: '请输入手机号码', trigger: 'blur' }
             ]  
         },
         
          //控制分配角色弹出框的显示与隐藏
         setRoleDialogVisible: false,
         
         //保存用户信息的数据,需要被分配权限的用户信息
         userInfo: {},
         //所有角色的数据
         roleList: [],
         //双向绑定更新分配角色数据
         selectRoleId: ''
    }
  },
  
  created () {
      this.getUserList()
  },

  methods: {
      async getUserList() {
          const { data:res } = await this.$http.get('users', {
              params: this.queryInfo
          })
          if(res.meta.status !== 200){
              this.$message.error("获取数据失败，请检查网络或刷新页面！")
          }else{
              this.userList = res.data.users
              this.total = res.data.total
          }
         
      },
      //页码大小改变
      handleSizeChange(newSize) {
          this.queryInfo.pagesize = newSize
          this.getUserList()
      },
      //页面值改变
      handleCurrentChange(newPage) {
          this.queryInfo.pagenum = newPage
          this.getUserList()
      },

      //修改后台api数据库中用户行为
      async userStateChanged(userinfo) {
          const { data:res } = await this.$http.put(`users/${userinfo.id}/state/${userinfo.mg_state}`)
          if(res.meta.status !== 200){
              userinfo.mg_state = !userinfo.mg_state
              this.$message.error("数据修改失败，请检查网络或接口是否异常！")
          }else{
              this.$message.success('更新用户状态成功') 
          }
      },
    //监听用户关闭对话框事件，重置表单
      addDialogClosed() {
          this.$refs.addFormRef.resetFields()
      },
      //添加用户之前，表单预校验
      addUser() {
            this.$refs.addFormRef.validate(async valid => {
              if(!valid) return
                const { data:res } = await this.$http.post('users', this.addForm) 
                if(res.meta.status !== 201){
                    userinfo.mg_state = !userinfo.mg_state
                    this.$message.error("添加用户失败！")
                    }else{
                        this.$message.success('添加用户成功')
                        //隐藏添加的对话框
                        this.addDialogVisible = false
                        //更新用户列表
                        this.getUserList()
                    }
        })
      },
      //展示编辑用户的对话框
      async showEditDialog (userId) {
          this.editDialogVisible = true
          const { data:res } = await this.$http.get('users/' + userId)
          if(res.meta.status !== 200){
              this.$message.error('获取用户信息失败')
          }else{
            this.editForm = res.data
          }
      },
      //关闭后重置修改表单数据
        editDialogClosed (){
            this.$refs.editFormRef.resetFields()
        },
        //表单预验证并提交
        editUserInfo() {
            this.$refs.editFormRef.validate(async (valid) => {
                if(!valid) return
                const { data:ret } = await this.$http.put('users/' + this.editForm.id,{email: this.editForm.email, mobile: this.editForm.mobile})
                if(ret.meta.status !== 200){
                    return this.$message.error('更新用户数据失败，请检查网络设置')
                }
                //关闭对话框
                this.editDialogVisible = false
                //更新数据列表
                this.getUserList()
                //提示修改成功
                this.$message.success('修改成功')
            })
        },
        //根据id删除用户信息
        async removeUserId(id){
            //弹框询问是否删除数据
            const res = await this.$confirm('此操作将删除该用户, 是否继续?', '提示', {
            confirmButtonText: '确定',
            cancelButtonText: '取消',
            type: 'warning'
            }).catch(err => {
                return err//如果错误会报错，return出去就行
            })//如果用户确定删除获取的字符串为confirm，如果用户取消删除获取的字符串为cancel
            if(res !=='confirm') {
                return this.$message.info('已经取消删除')
            }else{
                //发起请求删除数据
                const { data:res } = await this.$http.delete('users/' + id)
                if(res.meta.status !== 200){
                    this.$message.error("删除失败，请检查网络设置")
                }else{
                    this.$message.success('删除成功！')
                    this.getUserList()
                }
            }
        },

        //展示分配角色的对话框
        async setRole(userInfo) {
            this.userInfo = userInfo
            //在展示之前获取所有角色列表
            const { data: res } = await this.$http.get('roles')
            if(res.meta.status !== 200){
                return this.$message.error('请求失败，请检查网络设置！')
            }
            this.roleList = res.data

            this.setRoleDialogVisible = true
        },

        //点击确定按钮保存角色
        async updateUserInfo() {
            if(!this.selectRoleId) {
                return this.$message.info('请选择要分配的角色！')
            }
            const { data:res } = await this.$http.put(`users/${this.userInfo.id}/role`, {
                rid:this.selectRoleId
            })
            if(res.meta.status !== 200){
                return this.$message.error('更新角色失败，请检查网络设置！')
            }
            this.$message.success('更新角色成功！')
            this.getUserList()
        }

        
  },

  components: {},

}

</script>
<style lang='less' scoped>
</style>